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Shaffer ram-type hydraulic blowout preventer with automatic lock On the picture (left) there is the closing system with ram in opened position, and on the picture (right) is the same system in fully closed position.
Closing element of the ram-type preventer consists of three parts: rubber (elastomer), steel block, and ram holder. Closing element
Page 1 and 2: Well control equipment Matanović D
Page 3 and 4: Blowout Preventers These requiremen
Page 5 and 6: Blowout Preventers The recommended
Page 7 and 8: Blowout Preventers
Page 9 and 10: BOPs Rating Any assembly of blowout
Page 11 and 12: API Class 2 M 3 M 5 M 10 M 15 M BOP
Page 13 and 14: Cutaway view of the blowout prevent
Page 15 and 16: Annular-type preventer (Shaffer)
Page 17 and 18: Packing element Packing element (Hy
Page 19 and 20: They close the annular space outsid
Page 21: Ram-type preventers Blank units whi
Page 25 and 26: Blind rams can also be used as dril
Page 27 and 28: Rotationil preventers Rotational pr
Page 29 and 30: Diverters as the name says are used
Page 31 and 32: Diverters are mainly used in off-sh
Page 33 and 34: Kelly valves (kelly cocks) An upper
Page 35 and 36: In Shaffer type kelly valve, closin
Page 37 and 38: Drill string float valves A float v
Page 39 and 40: Flapper-type float valve The flappe
Page 41 and 42: Well head • The wellhead includes
Page 43 and 44: − If more than one casing string
Page 45 and 46: Three types of end and outlet flang
Page 47 and 48: A=2⋅(T+0,5⋅t+d)+S A - stud bolt
Page 49 and 50: Note! The pressure passage hole in
Page 51 and 52: Testing and Maintenance of surface
Page 53 and 54: When testing BOP stack the hole is
Page 55 and 56: Pressure tests The initial high pre
Page 57 and 58: Pressure tests The lower kelly valv
Page 59 and 60: Pressure tests Subsequent high pres
Page 61 and 62: For annular preventers closing pres
Page 63 and 64: Pressure testing of an ram-type pre
Page 65 and 66: Schematic of conventional hydraulic
Page 67 and 68: Shematic of conventional hydraulic
Page 69 and 70: Recommended installation of Blowout
Page 71 and 72: Safety distance for accumulator uni
Page 73 and 74:
Hydro-Nitrogen Accumulators Three d
Page 75 and 76:
Hydro-Nitrogen Accumulators (Krišt
Page 77 and 78:
Choke and kill manifolds
Page 79 and 80:
Drilling choke system Manually actu
Page 81 and 82:
Gate valves • The valves used on
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